1. # By default, the same scales are used for all panels. You can allow
  2. # scales to vary across the panels with the `scales` argument.
  3. # Free scales make it easier to see patterns within each panel, but
  4. # harder to compare across panels.
  5. #通过实践该代码即可领悟
  6. ##1
  7. ggplot(mpg, aes(displ, hwy)) + geom_point() +facet_wrap(~class, scales = "free")
  8. ggplot(mpg, aes(displ, hwy)) + geom_point() +facet_wrap(~class)
  1. # To repeat the same data in every panel,
  2. # simply construct a data frame that does not contain the facetting variable.
  3. #通过实践该代码即可领悟
  4. ggplot(mpg, aes(displ, hwy)) + geom_point(data = transform(mpg, class = NULL), colour = "grey85") + geom_point() + facet_wrap(~class)
  5. ggplot(mpg, aes(displ, hwy)) + geom_point() + facet_wrap(~class)
  1. #labs() ----Modify axis, legend, and plot labels
  2. #ggplot2 绘图时使用该参数来调整坐标轴、图例和标签
  3. #reorder 根据数值型变量对分类变量进行重新排序
  4. #reorder is a generic function. The "default" method treats its first argument as a categorical variable, and reorders its levels based on the values of a second variable, usually numeric.

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